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cpu/native: move syscalls into separate header

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This commit is contained in:
carl 2025-03-07 14:06:14 +01:00
parent 54d51b448c
commit cf54187b7c
3 changed files with 121 additions and 133 deletions
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72
cpu/native/include/native_internal.h
View File

@ -68,6 +68,7 @@
extern "C" {
#endif
#include "syscalls.h"
/**
* Prototype for native's internal callbacks
*/
@ -89,77 +90,6 @@ void _native_syscall_enter(void);
void _native_init_syscalls(void);
/**
* external functions regularly wrapped in native for direct use
*/
extern ssize_t (*real_read)(int fd, void *buf, size_t count);
extern ssize_t (*real_write)(int fd, const void *buf, size_t count);
extern off_t (*real_lseek)(int fd, off_t offset, int whence);
extern off_t (*real_fstat)(int fd, struct stat *statbuf);
extern int (*real_statvfs)(const char *restrict path, struct statvfs *restrict buf);
extern int (*real_fsync)(int fd);
extern size_t (*real_fread)(void *ptr, size_t size, size_t nmemb, FILE *stream);
extern void (*real_clearerr)(FILE *stream);
extern __attribute__((noreturn)) void (*real_exit)(int status);
extern void (*real_free)(void *ptr);
extern void* (*real_calloc)(size_t nmemb, size_t size);
extern void* (*real_malloc)(size_t size);
extern void* (*real_realloc)(void *ptr, size_t size);
extern void (*real_freeaddrinfo)(struct addrinfo *res);
extern void (*real_freeifaddrs)(struct ifaddrs *ifa);
extern void (*real_srandom)(unsigned int seed);
/* The ... is a hack to save includes: */
extern int (*real_accept)(int socket, ...);
/* The ... is a hack to save includes: */
extern int (*real_bind)(int socket, ...);
extern int (*real_connect)(int socket, ...);
extern ssize_t (*real_recv)(int sockfd, void *buf, size_t len, int flags);
extern int (*real_chdir)(const char *path);
extern int (*real_close)(int);
extern int (*real_fcntl)(int, int, ...);
/* The ... is a hack to save includes: */
extern int (*real_creat)(const char *path, ...);
extern int (*real_dup2)(int, int);
extern int (*real_execve)(const char *, char *const[], char *const[]);
extern int (*real_feof)(FILE *stream);
extern int (*real_ferror)(FILE *stream);
extern int (*real_fork)(void);
/* The ... is a hack to save includes: */
extern int (*real_getaddrinfo)(const char *node, ...);
extern int (*real_getifaddrs)(struct ifaddrs **ifap);
extern int (*real_getpid)(void);
extern int (*real_gettimeofday)(struct timeval *t, ...);
extern int (*real_ioctl)(int fildes, unsigned long request, ...);
extern int (*real_listen)(int socket, int backlog);
extern int (*real_open)(const char *path, int oflag, ...);
extern int (*real_mkdir)(const char *pathname, mode_t mode);
extern int (*real_rmdir)(const char *pathname);
extern DIR *(*real_opendir)(const char *name);
extern struct dirent *(*real_readdir)(DIR *dirp);
extern int (*real_closedir)(DIR *dirp);
extern int (*real_pause)(void);
extern int (*real_pipe)(int[2]);
/* The ... is a hack to save includes: */
extern int (*real_select)(int nfds, ...);
extern int (*real_poll)(struct pollfd *nfds, ...);
extern int (*real_setitimer)(int which, const struct itimerval
*__restrict value, struct itimerval *__restrict ovalue);
extern int (*real_setsid)(void);
extern int (*real_setsockopt)(int socket, ...);
extern int (*real_socket)(int domain, int type, int protocol);
extern int (*real_printf)(const char *format, ...);
extern int (*real_unlink)(const char *);
extern int (*real_rename)(const char *, const char *);
extern long int (*real_random)(void);
extern const char* (*real_gai_strerror)(int errcode);
extern FILE* (*real_fopen)(const char *path, const char *mode);
extern int (*real_fclose)(FILE *stream);
extern int (*real_fseek)(FILE *stream, long offset, int whence);
extern long (*real_ftell)(FILE *stream);
extern int (*real_fputc)(int c, FILE *stream);
extern int (*real_fgetc)(FILE *stream);
extern mode_t (*real_umask)(mode_t cmask);
extern ssize_t (*real_writev)(int fildes, const struct iovec *iov, int iovcnt);
extern ssize_t (*real_send)(int sockfd, const void *buf, size_t len, int flags);
/**
* data structures

118
cpu/native/include/syscalls.h Normal file
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@ -0,0 +1,118 @@
/*
* Copyright (C) 2013 Ludwig Knüpfer <ludwig.knuepfer@fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
#ifndef SYSCALLS_H
#define SYSCALLS_H
#include <sys/time.h>
#include <stdint.h>
#include <ifaddrs.h>
#include <stdio.h>
/**
* @addtogroup cpu_native
* @{
*/
#ifndef DOXYGEN
# if NATIVE_SYSCALLS_DEFINITION
# define __SPECIFIER
# else
# define __SPECIFIER extern
# endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* MARK: - System call wrappers */
/** @cond */
/**
* @name System call wrappers
*
* Internally, these function pointers are assigned their implementation in the standard library.
* We wrap system calls and syscall-invoking library calls to ensure **no context switches occur during a system call**.
* @{
*/
__SPECIFIER ssize_t (*real_read)(int fd, void *buf, size_t count);
__SPECIFIER ssize_t (*real_write)(int fd, const void *buf, size_t count);
__SPECIFIER size_t (*real_fread)(void *ptr, size_t size, size_t nmemb, FILE *stream);
__SPECIFIER ssize_t (*real_recv)(int sockfd, void *buf, size_t len, int flags);
__SPECIFIER void (*real_clearerr)(FILE *stream);
__SPECIFIER __attribute__((noreturn)) void (*real_exit)(int status);
__SPECIFIER void (*real_free)(void *ptr);
__SPECIFIER void* (*real_malloc)(size_t size);
__SPECIFIER void* (*real_calloc)(size_t nmemb, size_t size);
__SPECIFIER void* (*real_realloc)(void *ptr, size_t size);
__SPECIFIER void (*real_freeaddrinfo)(struct addrinfo *res);
__SPECIFIER void (*real_freeifaddrs)(struct ifaddrs *ifa);
__SPECIFIER void (*real_srandom)(unsigned int seed);
__SPECIFIER int (*real_accept)(int socket, ...);
__SPECIFIER int (*real_bind)(int socket, ...);
__SPECIFIER int (*real_connect)(int socket, ...);
__SPECIFIER int (*real_printf)(const char *format, ...);
__SPECIFIER int (*real_getaddrinfo)(const char *node, ...);
__SPECIFIER int (*real_getifaddrs)(struct ifaddrs **ifap);
__SPECIFIER int (*real_gettimeofday)(struct timeval *t, ...);
__SPECIFIER int (*real_getpid)(void);
__SPECIFIER int (*real_chdir)(const char *path);
__SPECIFIER int (*real_close)(int);
__SPECIFIER int (*real_fcntl)(int, int, ...);
__SPECIFIER int (*real_creat)(const char *path, ...);
__SPECIFIER int (*real_dup2)(int, int);
__SPECIFIER int (*real_execve)(const char *, char *const[], char *const[]);
__SPECIFIER int (*real_fork)(void);
__SPECIFIER int (*real_feof)(FILE *stream);
__SPECIFIER int (*real_ferror)(FILE *stream);
__SPECIFIER int (*real_listen)(int socket, int backlog);
__SPECIFIER int (*real_ioctl)(int fildes, unsigned long request, ...);
__SPECIFIER int (*real_open)(const char *path, int oflag, ...);
__SPECIFIER int (*real_pause)(void);
__SPECIFIER int (*real_pipe)(int[2]);
__SPECIFIER int (*real_select)(int nfds, ...);
__SPECIFIER int (*real_poll)(struct pollfd *fds, ...);
__SPECIFIER int (*real_setsid)(void);
__SPECIFIER int (*real_setsockopt)(int socket, ...);
__SPECIFIER int (*real_socket)(int domain, int type, int protocol);
__SPECIFIER int (*real_unlink)(const char *);
__SPECIFIER long int (*real_random)(void);
__SPECIFIER const char* (*real_gai_strerror)(int errcode);
__SPECIFIER FILE* (*real_fopen)(const char *path, const char *mode);
__SPECIFIER int (*real_fclose)(FILE *stream);
__SPECIFIER int (*real_fseek)(FILE *stream, long offset, int whence);
__SPECIFIER long (*real_ftell)(FILE *stream);
__SPECIFIER int (*real_fputc)(int c, FILE *stream);
__SPECIFIER int (*real_fgetc)(FILE *stream);
__SPECIFIER mode_t (*real_umask)(mode_t cmask);
__SPECIFIER ssize_t (*real_writev)(int fildes, const struct iovec *iov, int iovcnt);
__SPECIFIER ssize_t (*real_send)(int sockfd, const void *buf, size_t len, int flags);
__SPECIFIER off_t (*real_lseek)(int fd, off_t offset, int whence);
__SPECIFIER off_t (*real_fstat)(int fd, struct stat *statbuf);
__SPECIFIER int (*real_fsync)(int fd);
__SPECIFIER int (*real_mkdir)(const char *pathname, mode_t mode);
__SPECIFIER int (*real_rmdir)(const char *pathname);
__SPECIFIER DIR *(*real_opendir)(const char *name);
__SPECIFIER struct dirent *(*real_readdir)(DIR *dirp);
__SPECIFIER int (*real_closedir)(DIR *dirp);
__SPECIFIER int (*real_rename)(const char *, const char *);
__SPECIFIER int (*real_statvfs)(const char *restrict path, struct statvfs *restrict buf);
/** @}*/
/** @endcond */
#ifdef __cplusplus
}
#endif
#if !defined(DOXYGEN)
# undef __SPECIFIER
#endif
/** @} */
#endif /* SYSCALLS_H */

64
cpu/native/syscalls.c
View File

@ -46,73 +46,13 @@
#include "stdio_base.h"
#include "kernel_defines.h"
/* This header defines the system call function pointers */
#define NATIVE_SYSCALLS_DEFINITION 1
#include "native_internal.h"
#define ENABLE_DEBUG 0
#include "debug.h"
ssize_t (*real_read)(int fd, void *buf, size_t count);
ssize_t (*real_write)(int fd, const void *buf, size_t count);
size_t (*real_fread)(void *ptr, size_t size, size_t nmemb, FILE *stream);
ssize_t (*real_recv)(int sockfd, void *buf, size_t len, int flags);
void (*real_clearerr)(FILE *stream);
__attribute__((noreturn)) void (*real_exit)(int status);
void (*real_free)(void *ptr);
void* (*real_malloc)(size_t size);
void* (*real_calloc)(size_t nmemb, size_t size);
void* (*real_realloc)(void *ptr, size_t size);
void (*real_freeaddrinfo)(struct addrinfo *res);
void (*real_freeifaddrs)(struct ifaddrs *ifa);
void (*real_srandom)(unsigned int seed);
int (*real_accept)(int socket, ...);
int (*real_bind)(int socket, ...);
int (*real_connect)(int socket, ...);
int (*real_printf)(const char *format, ...);
int (*real_getaddrinfo)(const char *node, ...);
int (*real_getifaddrs)(struct ifaddrs **ifap);
int (*real_gettimeofday)(struct timeval *t, ...);
int (*real_getpid)(void);
int (*real_chdir)(const char *path);
int (*real_close)(int);
int (*real_fcntl)(int, int, ...);
int (*real_creat)(const char *path, ...);
int (*real_dup2)(int, int);
int (*real_execve)(const char *, char *const[], char *const[]);
int (*real_fork)(void);
int (*real_feof)(FILE *stream);
int (*real_ferror)(FILE *stream);
int (*real_listen)(int socket, int backlog);
int (*real_ioctl)(int fildes, unsigned long request, ...);
int (*real_open)(const char *path, int oflag, ...);
int (*real_pause)(void);
int (*real_pipe)(int[2]);
int (*real_select)(int nfds, ...);
int (*real_poll)(struct pollfd *fds, ...);
int (*real_setsid)(void);
int (*real_setsockopt)(int socket, ...);
int (*real_socket)(int domain, int type, int protocol);
int (*real_unlink)(const char *);
long int (*real_random)(void);
const char* (*real_gai_strerror)(int errcode);
FILE* (*real_fopen)(const char *path, const char *mode);
int (*real_fclose)(FILE *stream);
int (*real_fseek)(FILE *stream, long offset, int whence);
long (*real_ftell)(FILE *stream);
int (*real_fputc)(int c, FILE *stream);
int (*real_fgetc)(FILE *stream);
mode_t (*real_umask)(mode_t cmask);
ssize_t (*real_writev)(int fildes, const struct iovec *iov, int iovcnt);
ssize_t (*real_send)(int sockfd, const void *buf, size_t len, int flags);
off_t (*real_lseek)(int fd, off_t offset, int whence);
off_t (*real_fstat)(int fd, struct stat *statbuf);
int (*real_fsync)(int fd);
int (*real_mkdir)(const char *pathname, mode_t mode);
int (*real_rmdir)(const char *pathname);
DIR *(*real_opendir)(const char *name);
struct dirent *(*real_readdir)(DIR *dirp);
int (*real_closedir)(DIR *dirp);
int (*real_rename)(const char *, const char *);
int (*real_statvfs)(const char *restrict path, struct statvfs *restrict buf);
void _native_syscall_enter(void)
{